PbpE

• Description: penicillin-binding protein PBP 4* (spore cortex)
  
  

Gene name	pbpE
Synonyms
Essential	no
Product	penicillin-binding protein PBP 4* (spore cortex)
Function	endopeptidase
Gene expression levels in SubtiExpress: pbpE
MW, pI	51 kDa, 4.835
Gene length, protein length	1353 bp, 451 aa
Immediate neighbours	racX, sacB
Sequences	Protein DNA DNA_with_flanks
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

cell wall synthesis, cell wall degradation/ turnover, cell envelope stress proteins (controlled by SigM, V, W, X, Y)

This gene is a member of the following regulons

SigW regulon

The gene

Basic information

• Locus tag: BSU34440

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: beta-lactamase family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization: spore cortex

Database entries

• Structure: 3TG9 (from Bacillus halodurans, 27% identity, 59% similarity)

• UniProt: P32959

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: pbpE-racX PubMed

• Expression browser: pbpE PubMed

• Sigma factor: SigW PubMed

• Regulation:
  • repressed during logrithmic growth (AbrB) PubMed, indirect regulation by AbrB PubMed
  • induced by cell wall stress (SigW) PubMed

• Regulatory mechanism:

• Additional information: the mRNA is very stable (half-life > 15 min) PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

María Mercedes Palomino, Carmen Sanchez-Rivas, Sandra M Ruzal
High salt stress in Bacillus subtilis: involvement of PBP4* as a peptidoglycan hydrolase.
Res Microbiol: 2009, 160(2);117-24
[PubMed:19063962] [WorldCat.org] [DOI] (P p)

G Hambraeus, C von Wachenfeldt, L Hederstedt
Genome-wide survey of mRNA half-lives in Bacillus subtilis identifies extremely stable mRNAs.
Mol Genet Genomics: 2003, 269(5);706-14
[PubMed:12884008] [WorldCat.org] [DOI] (P p)

Stephan Zellmeier, Ulrich Zuber, Wolfgang Schumann, Thomas Wiegert
The absence of FtsH metalloprotease activity causes overexpression of the sigmaW-controlled pbpE gene, resulting in filamentous growth of Bacillus subtilis.
J Bacteriol: 2003, 185(3);973-82
[PubMed:12533473] [WorldCat.org] [DOI] (P p)

Min Cao, Tao Wang, Rick Ye, John D Helmann
Antibiotics that inhibit cell wall biosynthesis induce expression of the Bacillus subtilis sigma(W) and sigma(M) regulons.
Mol Microbiol: 2002, 45(5);1267-76
[PubMed:12207695] [WorldCat.org] [DOI] (P p)

X Huang, A Gaballa, M Cao, J D Helmann
Identification of target promoters for the Bacillus subtilis extracytoplasmic function sigma factor, sigma W.
Mol Microbiol: 1999, 31(1);361-71
[PubMed:9987136] [WorldCat.org] [DOI] (P p)

M A Strauch
Delineation of AbrB-binding sites on the Bacillus subtilis spo0H, kinB, ftsAZ, and pbpE promoters and use of a derived homology to identify a previously unsuspected binding site in the bsuB1 methylase promote.
J Bacteriol: 1995, 177(23);6999-7002
[PubMed:7592498] [WorldCat.org] [DOI] (P p)

D L Popham, P Setlow
Cloning, nucleotide sequence, and regulation of the Bacillus subtilis pbpE operon, which codes for penicillin-binding protein 4* and an apparent amino acid racemase.
J Bacteriol: 1993, 175(10);2917-25
[PubMed:8491712] [WorldCat.org] [DOI] (P p)